Cisco 400-007 Exam With Confidence Using Practice Dumps

Zero Trust principles cover multiple domains:

A (Workload): Securing application workloads regardless of location.

C (Workplace): Securing user access to services across office, remote, or hybrid work models.

Zero Trust design ensures authentication, authorization, and policy enforcement at every access point for both users and applications.

Why other options are incorrect:

B, D, E: These terms are not recognized Zero Trust domains in CCDE or industry frameworks.

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Strictly Centralized Control Plane: Single point of failure and difficult to horizontally scale, most often used in experimental SDN controllers.

Semi or Logically Centralized Control Plane: Possible convergence difficulties, N instances to configure and manage, easy to horizontally scale, just deploy.

Fully Distributed Control Plane: Resilient to many failure points but still susceptible to issues around synchronization of state, canonical approach, one instance of control plane per device (logical or real).

B (MPLS over BGP over mGRE):This design allows enterprises to run MPLS VPNs across their own infrastructure (Overlay VPN) while using MP-BGP for control plane distribution of VPNv4 routes. The mGRE tunnel structure allows scalability as branches grow, while MPLS VPN labels ensure traffic separation.

Other options explained:

A: EIGRP OTT is not scalable for large VPN deployments.

C: DMVPN per VRF becomes complex with high scale growth.

D: Point-to-point GRE per VRF lacks scalability for 60+ sites.